CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 688.0	$ 615.5
Accounts receivable, net	476.4	385.3
Inventories	353.8	321.3
Other current assets	80.1	51.6
Total current assets	1,598.3	1,373.7
Property, plant and equipment	2,146.1	2,035.5
Less: accumulated depreciation and amortization	1,139.6	1,092.3
Property, plant and equipment, net	1,006.5	943.2
Operating lease right-of-use assets	58.5	68.3
Investments in affiliated companies	215.7	214.7
Goodwill	108.9	111.1
Intangible assets, net	26.1	30.5
Deferred income taxes	80.0	16.0
Pension and other postretirement benefits	17.0	12.9
Other noncurrent assets	31.6	23.4
Total Assets	3,142.6	2,793.8
Current liabilities:
Notes payable and other current debt	44.2	2.3
Accounts payable	207.7	213.1
Pension and other postretirement benefits	2.4	2.3
Accrued salaries, wages and benefits	114.0	106.0
Income taxes payable	39.5	26.0
Operating lease liabilities	8.1	10.1
Other current liabilities	142.7	143.6
Total current liabilities	558.6	503.4
Long-term debt	209.9	252.9
Deferred income taxes	11.6	10.4
Pension and other postretirement benefits	52.1	57.5
Operating lease liabilities	53.4	60.4
Deferred compensation benefits	26.9	22.9
Other long-term liabilities	27.8	31.8
Total Liabilities	940.3	939.3
Commitments and contingencies (Note 17)
Equity:
Preferred stock, 3.0 million shares authorized; 0 shares issued and outstanding	0.0	0.0
Common stock, par value $0.25 per share; 200.0 million shares authorized; shares issued: 75.3 million and 75.3 million, respectively; shares outstanding: 74.1 million and 74.0 million, respectively	18.8	18.8
Capital in excess of par value	251.2	267.3
Retained earnings	2,335.8	1,846.7
Accumulated other comprehensive loss	(155.7)	(110.6)
Treasury stock, at cost (1.2 million and 1.3 million shares, respectively)	(247.8)	(167.7)
Total Equity	2,202.3	1,854.5
Total Liabilities and Equity	$ 3,142.6	$ 2,793.8